Seesaw



Dec, 16, 1924.

L. TRowBRlDGE 1519884 SEESAW Filed March 31, 1923 Patented Bec. 16, 1924.

inlassa- PATE NT OFF IFC E LEROY TROVBRIDGE, OF SPRINGFIELD, SOUTH DAKOTA.

SEESAW.

Application led March 31, 1923.

To all whom t may concer/n.'

Be it known that l., LEROY Tnownincn, a Citizen of the United States, residing at Springfield, in the county of Bon Homme and State of South Dakota, have invented new and useful Improvements in Seesaws, of which the following is a specification.

This invention relates to amusement devices and more particularly to a seesaw and an object of the invention is to-provide a seesaw which permits pivotal movement of the seat portions of the seesaw with relation to the pivotal movement of the major portion or body of the seesaw permitting the seat portions to remain in horizontal position at all times and eliminating the liability of the occupants of the seesaw from sliding towards the center of the seesaw during its operation.

Another object of the invent-ion is to provide hand grips in the improved seesaw structure which are connected by suitable leverage structures to the seat portions so as to permit the occupants to move their body in unison with the movement of the seat portion and body portion and maint-ain themselves in a comfortable position.

Other objects of the invention will appear in the following detailed description and in the accompanying drawing wherein:

Fig. 1 is a side elevation of the improved seesaw.

Fig. 2 is a top plan of the seesaw,

Fig. 3 is a vertical section taken on the line 3 3 of Fig. 2.

Fig. 4 is a vert-ical section taken on the line 4 4 of Fig. 2.

Referring more particularly to the drawing the improved seesaw comprises the standard 1 which in turn comprises side members 2 which are driven into the ground as clearl;7 shown in Fig. 1 of the drawing and which are connected by transverse braces 3 so as to provide a rigid, secure structure. The board or body 4 of the seesaw rests upon or is suitably attached to a pivot pin 5 which is carried by the upper ends of the side members 2 to permit rocking of the body or board 4. A centrally located arm or member 6 is attached to the cross Serial No. 629,044.

braces 3 and extends through a slot 7 formed in the board 4 and it serves to limit longitudinal movement of the board 4 relative to the standard structure 1 during the rocking or pivotal movement of the board. A bar 8 is pivotally connected to the upper forked end 9 of the member 6 and it extends parallel with the board 4. Levers 10 are pivotally connected to the ends of the bar 8 and extend downwardly through the opening 11 in the board 4 adjacent each end of the board. The levers 10 are pivotally connected to the board by means of suitable pivot bolts or pins 12. The lower ends of the levers 10 are in turn pivotally connected to levers 13 which are in turn pivotally connected as shown at 14 to the under surfaces of the seat portions 15 of the seesaw. The seat portions 15 are hingedly connected by means of hinges 16 to thel ends of the board 4 so as to permit seat portions to remain in substantially horizontal position during the rocking or teetering of the boa-rd 4. Hand grips 17 are carried by bolts 18 which pivotally connect the upper ends of the levers 10 to the bar 8.

By particular reference to Fig. 1 of the drawing it will be noted that the hand grips 17 and the seat portions 15 are arranged so that when the occupant is seated upon the seat portion with his hands gripping the hand grips 17 he can by slightly swinging his body with the movement of the board 4 and by applying slight pressure to the. hand grips rock the board 4 and at the same time maintain himself in substantially erect and comfortable position. Through the medium of the levers 10 and 13 the seat portions 15 will move in unison with the board 4 and will substantially maintain their horizontal position.

It is, of course, to be understood that the invention may be constructed in various other manners and the parts associated in different relations and, therefore, l do not desire to be limited in any manner except as set forth in the claim hereunto appended.

Having thus described my invention what l claim is:

In a scesa-w, a standard, a board, a supporting pin roekably supporting said board from said standard, said board provided with a centrally located slot, a member rising from said standard and extending 5 through said slot for limiting longitudinal movement of the hoard relative to the standarch seat portions pivotally connected to the ends of said board, and pivotally oonnected levers connecting said seat portions to the ends of the boardindependently of the pivotal connection between the seat portions and board.

In testimony whereof I eilix my signature.

LEROY TROWBBIDGE. 

